28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications - TPS61040

TPS61040 (ACTIVE)

28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

 

Recommended alternative parts

  • TPS61046  -  For applications requiring smaller package or True Disconnection

Description

The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generate standard 3.3-V or 5-V to 12-V power conversions.

The TPS6104x operates with a switching frequency up to 1 MHz. This frequency allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin WSON package, the TPS6104x gives a very small overall solution size. The TPS61040 device has an internal 400-mA switch current limit, while the TPS61041 device has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications. The low quiescent current (typically 28 µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

Features

  • 1.8-V to 6-V Input Voltage Range
  • Adjustable Output Voltage Range up to 28 V
  • 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
  • Up to 1-MHz Switching Frequency
  • 28-µA Typical No-Load Quiescent Current
  • 1-µA Typical Shutdown Current
  • Internal Soft Start
  • Available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON Packages

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Parametrics Compare all products in Boost Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS61040 TLV61046A TPS61041 TPS61045 TPS61046 TPS61096A
1.8    1.8    1.8    1.8    1.8    1.8   
6    5.5    6    6    5.5    5.5   
1.8    3.3    1.8    1.8    4.5    4.5   
28    28    28    28    28    28   
0.4    0.9    0.25      0.9    0.5   
  1        1    1   
  850        850     
1000    1250    1000    1000    1250     
0.028    0.11    0.028    0.04    0.11    0.001   
Enable    Enable
Light Load Efficiency
Load Disconnect   
Enable    Enable
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect   
Adjustable Current Limit
Enable
Light Load Efficiency   
88      88    88    90    90   
-40 to 85    -40 to 125    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
SOT-23
SOT-23-THIN
WSON   
SOT-23    SOT-23
WSON   
SON    DSBGA    WSON   

Other qualified versions of TPS61040

Version Part Number Definition
Automotive TPS61040-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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WEBENCH® Designer TPS61040

  Min   Max Range
Vin  V 1.8 to 6.0V
Vout  V 1.8 to 28.0V
Iout  A ≤ 0.4A
Ambient Temp  °C -40 to 85°C


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